Malting



(No Model.) 3 Sheets-Sheet 3.

' F. B. GIESLER.

, MALTING.

UNITED STATES PATENT OFFICE.

FRANKLIN B. GIESLER, MILWAUKEE, WISCONSIN.

MALTING.

SPECIFICATION forming part 0f Letters Patent N0. 507,580, dated October31, 1893.

Application filed July 30,1892. Serial No. 441,677. (No model.)

To all whom it may concern:

Beit known that I, FRANKLIN B. GIEsLER, a citizen of the United States,and a resident of Milwaukee, in the county of Milwaukee, and in theState of Wisconsimhave invented certain new and usefulImprovements inMalting; and I do hereby declare that the following is a full, clear,and exact description thereof.

My invention has for its object to simplify and cheapen maltingapparatus of that class in which a rotative drum and means forcirculating air therein are essential features; and the said inventionconsists in certain peculiarities of construction and combination ofparts hereinafter described with reference to the accompanying drawingsand subseqnently claimed.

In the drawings, Figure 1 represents a vertical longitudinal section ofa malting apparatus constructed according to my invention,

the section being taken on line 1-1 of the suc-V ceeding figure; Figs. 2and 3 vertical transverse sections respectively taken on line 2 2 and3-3 of the preceding figure; Fig. 4, a side `elevation of the maltingapparatus; Fig. 5, a

detail vertical longitudinal section of the eX- haust end of saidapparatus practically taken on line 1-1 of Fig. 2, but illustrating theparts on a larger scale than in Fig l; Fig. 6, a detail end elevationpartly in section on line 6 6 of Fig. 1, and Fig. 7, a detail sectionalview on line 7-7 of the same figure.

Referring by letter to the drawings, A represents a drum having theperipheries of its heads B, O, impinged against frictionV disks D faston longitudinal shafts EV arranged in suitable bearings on oppositesides of the center of the drum and beneath the same. By means ofworm-Wheels F fast on the longitudinal shafts E, and in mesh with WormsGr rigid on a drive shaft H, a rotation is imparted to the drum, by thecontact therewithof the friction-disks D that are also fast on saidlongitudinal shafts, this rotation being necessarily slow. --i

The drum is provided with the usual inlet openings for steeped grain,and suitable covers I are employed to close the openings when said drumis in operation. The drum is also provided with a central dischargeopening having a sliding cover J, and a man-hole hav- .connection withsources of cool moist air and hot-air employed at different stages ofthe malting process. As shown in Fig. 1, I prefer to connect an atomizerN tothe closed end of the chamber L, this atomizer bei-ng of anypreferred construction and put into operation at such times as may benecessary or desirable. The flange c on-the drum-head C turns freely inthe open end of another chamber O joined to a Vertical pipe P that inpractice leads to a duct or passage in communication with a suction fan,not shown, but common in the art to which my invention relates, thedraft through said pipe being controlled by a damper Q shown in Fig. 1.

The construction and arrangement of parts thus far described except asto the inclusion of the atomizer N is not materially different in thematter of detail from what is shown and minntely specified in Patent No.476,997, issued .I une 14, 1892, to F. B. Giesler and H. Smith, thenovel features of the present apparatus being hereinafter set forth.

At intervals of its circumference, the drum A is interiorly providedwith longitudinal ribs R, preferably in the form of angle irons boltedto said drum,th`ese ribs being designed to insure a lifting and turningover of the grain during the rotation of the aforesaid drum.

Fast to the head B of the drum is the flaring end dof a centrallyarranged conical pipe S yof any suitable perforated material, the smallends e of this conical and perforated pipe being abruptly tapered andprovided with a collar f that loosely engages the reduced inner end g ofa shaft'T that is loose in the bearings h forming party of spiders U,

one of which is tted in the flanged opening of the drum-head C andanother in the eX- haust-chamber O above specified.

Keyed or otherwise made fast to the shaft T is a hub t' on a plate Vthat is provided with a .facingj of brass orother anti-friction maferialthat impinges against a circumferential flange 7c extended inward fromthe drum-head C, the plate being in the form of a circle cut away on ahorizontal line to leave an opening for the escape of air from the drum,the normal position of this plate being best illustrated in Fig. 3.Adjacent to its hub, the plate V is provided with a series of openingsclosed by perforated plates m, and to prevent the plate from having anygreater movement on its axis than is necessary to bring its straightedge parallel with the fall of the grain in the drum, when underrotation, I key a stop-arm \V on that portionof the shaft T within theexhaust chamber O and provide the free end of this stop-arm with ascrewX at right angles thereto, the screw being adjusted to vary the throw ofsaid arm as may be found necessary in order to accurately determine theparallel relation above specified.

In practice the pressure of the grain on the plate tends to cause arotation of the latter and the shaft T on which it is keyed, but thescrew X or free end of the stop-arm W' coming in contact with theopposing pipe P the rotation of said plate is checked and the latter ismaintained in such position as to have its straight edge parallel to theconstant fall of said grain in the drum, whereby the airoutlet from saiddrum is also parallel to the air-space therein. Steeped grain beingintroduced into the drum and the rotating mechanism started, cool moist-air is admitted through the pipe M and chamber L to the conicalperforated pipe S from whence it is drawn through said grain by theusual suction apparatus and passes out at the opening due to the cutawayportion of the otherwise circular plate V, the suction being regulatedby the damper Q, above described. The pipe S being conical with itsgreatest diameter farthest from the suction,the draft is equalizedthroughout the grain owing to the fact that there is necessarily agreater amount of this grain to be acted upon at the point nearest saidsuction, and by this equalization of the draft I insure an equalgermination of the mass within the drum. The air acting on the grainimmediately adjacent to the abruptly tapered small end of the perforatedpipe exhausts through the adjacent perforations in the plate V, and thusnone of said grain can possibly escape the germinating induence. Thegerminating process having been completed, the cool moistair is cut offand hot-air turned on to dry the malt, the circulation of this hot-airbeing precisely the same as that described in connection with said coolmoistair.

Having now fully described my invention, what I claim as ne'v, anddesire to obtain by Letters Patent, is

l. The combination of a horizontal rotative drum having one end thereofcommunicating with an air-exhaust, a perforatedlongitndinal pipearranged within the drum and open to air at that end farthest from. theexhaust, but of such construction as to have a gradual increase ofresistance to the escape of 'the'air toward the point at which thesuction is greatest; and suitable means for the provision of anair-space within said drum intermediate of said exhaust and adjacent endof the per forated pipe, this air-space being in communi cation withthat portion of the aforesaid drum containing said pipe, substantiallyas set forth.

2. The combination of ahorizontal rotative drum having one end thereofcommunicating with an air-exhaust, a perforated longitudinal pipearranged within the drum and open to air at the end farthest from theexhaust, but of such construction as to have a gradual increase ofresistance to the escape of the air toward the point at which thesuction is greatest; and a transverse partition arranged Within saiddrum intermediate of said exhaust and the perforated pipe, but whichonly partially cuts off that portion of the aforesaid drum containingsaid pipe, substantially as set forth.

3. The combination of a horizontal rotative drum having one end thereofcommunicating with an air-exhaust, a perforated longitudinal pipearranged within the drum and open to air at the end farthest from theexhaust, but of such construction as to have a gradual increase ofresistance to the escape of the air toward the point at which thesuction is greatest; and a non-rotary plate arranged within said drumintermediate of the exhaust and adjacent end of the perforated pipe,this plate being of such dimensions as to leave an opening connectingthe spaces on opposite sides thereof, substantially as set forth.

fl. The combination of a horizontal rotative drum having one end thereofcommunicating with an airexhaust, a perforated longitudinal pipearranged within the drum and open to air at that end farthest from theexhaust, but of such construction as to have a gradual increase ofresistance to the escape of the air toward the point at which thesuction is great` est; a transverse plate normally loose in the drumintermediate of the exhaust and adjacent end of the perforated pipe,this plate being of such dimensions as to leave an open ing connectingthe spaces on opposite sides thereof, a flange in frictional contactwith the plate, and a stop mechanism for limiting movement of said plateon its axis, substantially as set forth.

5. The combination of a horizontal rotative drum having one end thereofcommunicating with an air-exhaust, a perforated longitudinal pipearranged within the drum and open to air at that end farthest from theexhaust, but of such construction as to have a gradual resistance to theescape of the air toward the point at which suction is greatest; a looseshaft in line with the pipe and loosely engaging that end of the samenearest the exhaust, a transverse plate fast on the shaft and havingsuch dimensions as to leave an opening connecting the spaces betweenwhich it IOO intervenes, a ange in frictional contact with the plate,and a stop-mechanism for limiting. the movement of said plate on theshaft, substantially as set forth.

6. The combination of the rotative horizontal drum having a perforatedlongitudinal -pipe of conical form arranged therein to rotate therewith,an air-circulating system of which the perforated pipe forms a part, atransverse plate normally loose at the small' end of said pipe andhaving the form of a circle cut away at a certain point of itscircumference, a circular ii'ange in frictional contact with the plate,and a stop-mechanism for limiting movement of said plate on its axis,substantially as set forth.

7. The combination of the rotative horizontal drum having a perforatedlongitudinal pipe of conical form abruptly tapered at its small end, anair-circulating system of which the perforated pipe forms a part, atransverse plate that'is loose at the small end of said pipe, has theform of a circle cut away at a certain point of its circumference and isprovided with perforations adjacent to said pipe; a circular flange infrictional contact with said plate, and a stop mechanism for limitingmovement of this plate on its axis substantially as set forth.

8. The combination of a rotative horizontal drum having a perforatedlongitudinal pipe of conical form abruptly tapered at its small end, anair-circulating system of which the perforated pipe forms a part, aloose shaft in line with said pipe and loosely engaging the same, atransverse plate thatl is fast on the shaft, has the form of a circlecut away at a certain point of its circumference and is provided withperforations adjacent to said pipe; a circular flange in frictionalcontact with said plate, and a stop-arm fast on said shaft substantiallyas set forth. l

9. The combination of a horizontal rotative drum having one end thereofcommunicating with an air-exhaust, a perforated longitudinal pipearranged within the drum and open at that end farthest from the exhaust,but of Y such construction as to havea gradual ingreatest; an atomizerin line with the inlet end of the perforated pipe, andV suitable meansfor the provision of an air-space within said drum intermediate of saidexhaust and adjacent end of said perforated pipe, this airspace being incommunication with that portionof the aforesaid drum containing theaforesaid pipe, substantially as set forth.

10. The herein described malting apparatus consisting of the rotativehorizontal drum interiorly provided with longitudinal ribs at intervalsof its circumference, a perforated longitudinal pipe of conical formarranged within the drum to rotate therewith, an air circulating systemof which the perforated pipe forms a part, a transverse plate that isnormally loose at the small end of the pipe, has the form of a circlecut away at a certain point of its circumference and is provided withperforations adjacent to said pipe; a circular ange in frictionalcontact with the plate, and a stop mechanism for limiting movement ofsaid plate on its axis, substantially as setforth. y v

l1.. The herein described malting apparatus consisting of the rotativehorizontal drum interiorly provided with longitudinal ribs at intervalsof yits circumference, a perforated longitudinal pipe of conical` formarranged within thedrum to rotate therewith, an air circulating systemof which the perforated pipe forms a part, an atomizer in line with theinlet end of said pipe, a transverse platethat is normally loose atthesmall end of said pipe, has the form of a circle cut away at a certainpoint ofits circumference and is provided FRANKLIN B. GIESLER.

Witnesses: Y N. E. OLIPHANT, H. H. MEIXSELL.

